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Restructured from flat .tex/.pdf files into per-paper subdirectories. Added Antje Worring as co-author on all papers. Synced PDFs to pdfs/ for download site.
59 lines
2.2 KiB
TeX
59 lines
2.2 KiB
TeX
\section{Multi-Tenant Architecture}
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\label{sec:multitenant}
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%% =========================================================================
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Teleport supports white-label deployment: multiple independent bridge brands operate from a single binary, sharing MPC infrastructure while maintaining distinct identities, fee structures, and chain sets.
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\subsection{Routing}
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Incoming requests are routed by hostname:
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\begin{lstlisting}[language=Go,caption={Hostname-based tenant routing}]
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func (s *Server) resolveTenant(
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r *http.Request,
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) (*TenantConfig, error) {
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host := r.Host
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cfg, ok := s.tenants[host]
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if !ok {
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return nil, ErrUnknownTenant
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}
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return cfg, nil
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}
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\end{lstlisting}
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Each tenant hostname (e.g., \texttt{bridge.lux.network}, \texttt{bridge.example.com}) maps to a \texttt{TenantConfig} specifying allowed chains, fee parameters, branding assets, and yield strategy set.
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\subsection{Tenant Manifest}
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\begin{lstlisting}[language=JSON,caption={Tenant manifest example}]
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{
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"id": "tenant-lux",
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"hostnames": ["bridge.lux.network"],
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"chains": [1, 56, 137, 42161, 10, 8453, 96369],
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"fee_bps": 30,
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"stakeholder_bps": 5000,
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"yield_strategies": ["babylon", "dchain-lp"],
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"shariah_mode": false,
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"mpc_group": "default"
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}
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\end{lstlisting}
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The \texttt{mpc\_group} field selects which MPC key set to use. Multiple tenants can share the same MPC group (shared security) or use dedicated groups (isolated key material).
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\subsection{Isolation Guarantees}
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\begin{property}[Tenant Isolation]
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Tenants share MPC signing infrastructure but are isolated in:
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\begin{enumerate}[nosep]
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\item Nonce namespaces: each tenant's nonce bitmaps are independent.
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\item Fee accounting: bridge fees accrue to tenant-specific addresses.
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\item Chain access: a tenant can only bridge to chains listed in its manifest.
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\item Rate limits: per-tenant daily volume caps.
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\end{enumerate}
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\end{property}
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The on-chain Teleporter contract does not encode tenant identity. Tenant isolation is enforced at the API and MPC relay layer. The contract's security properties (soundness, conservation) hold regardless of tenant configuration.
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%% =========================================================================
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